<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			div {
				background-color: #00FFFF;
				background-image: url(../img/1.jpg);
				background-repeat: no-repeat;
				/* background-size: 100% 100%; */
				/* 
				 background-size
					contain：图片完整地显示在指定区域中
					cover：图片会占满区域，但不保证图片显示完整
					px和百分比：x y
				 */
				background-position: top;
				/* background-attachment: fixed; */
				height: 400px;
			}
		</style>
	</head>
	<body>
		<div>
			
		</div>
	</body>
</html>
